/*
 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.svm.core.graal.nodes;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_8;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_8;

import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
import org.graalvm.compiler.nodes.spi.Lowerable;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import org.graalvm.word.LocationIdentity;

import com.oracle.svm.core.c.function.CEntryPointActions;

import jdk.vm.ci.meta.JavaKind;

@NodeInfo(cycles = CYCLES_8, size = SIZE_8)
public final class CEntryPointEnterNode extends FixedWithNextNode implements Lowerable, MemoryCheckpoint.Single {

    public static final NodeClass<CEntryPointEnterNode> TYPE = NodeClass.create(CEntryPointEnterNode.class);

    /** @see CEntryPointActions */
    public enum EnterAction {
        CreateIsolate,
        AttachThread,
        Enter,
        EnterIsolate,
    }

    protected final EnterAction enterAction;

    @OptionalInput protected ValueNode parameter;

    public CEntryPointEnterNode(EnterAction enterAction, ValueNode parameter) {
        super(TYPE, StampFactory.forKind(JavaKind.Int));
        this.enterAction = enterAction;
        this.parameter = parameter;
    }

    public EnterAction getEnterAction() {
        return enterAction;
    }

    public ValueNode getParameter() {
        return parameter;
    }

    @Override
    public void lower(LoweringTool tool) {
        tool.getLowerer().lower(this, tool);
    }

    @Override
    public LocationIdentity getLocationIdentity() {
        return LocationIdentity.any();
    }
}
